The gas detector is mainly composed of the sensor and the motherboard circuit of the device itself. We divide it into two main parts, the first part is the sensor part, and the second part is the main part of the detector.

Let's first look at the sensor in the gas detector. Sensors have a fixed service life, and sensors with different principles have different service lives. For example, sensors based on electrochemical principles must be replaced after two years of their normal design life. Generally speaking, the replacement time has little to do with the storage time. Because the electrochemical sensor contains electrolyte, it will naturally decrease during the placement of the sensor, so it will be consumed even if it is not used. So basically there is a fixed replacement cycle, which must be replaced once it expires. Therefore, we recommend that users do not need to prepare sensor accessories in advance when using the detector, otherwise it will be waste and loss.

The second part is the circuit board of the gas detector. From this point of view, the design of reliable, material sufficient circuit can basically guarantee the service life of the fuselage 3-5 years. Some portable gas detectors have suction pumps and batteries, which can be used for about 2 years.

In summary: There will be no problem with the circuit board under normal use of the gas detector. In most cases, the sensor failure causes the instrument to fail, so the service life of the gas detector is equal to the service life of the sensor. The service life of the electrochemical sensor is about 2 years.After 2 years, you need to test the performance of the instrument, and then judge whether to replace the sensor.

When replacing the sensor, gas detection requires precise calibration.

Nowadays, many gas detectors can replace detection sensors, but this does not mean that a detector can replace sensors at any time. Whenever the sensor is replaced, in addition to the necessary aging of the sensor, it is also necessary to calibrate the instrument. It is necessary to use the corresponding standard gas for calibration.

generally speaking, each sensor corresponds to 1 specific gas to be detected, but no 1 gas detector can be absolutely specific. Therefore, when selecting the 1 gas sensor, the interference of other gases on the sensor detection should be understood as much as possible to ensure the accurate detection of specific gases.

What are the types of portable gas detectors?

Portable gas detectors are mainly divided into two types from the detection principle: diffusion type and pumping type. Portable, as the name suggests, is designed to be portable, mobile, and flexible. When choosing, we need to consider which portable instrument is suitable for his application field.

The function of the portable gas detector:

1. The direct reading digital screen can quickly display the current gas concentration.

2. There is a record storage, you can set the sampling interval, and automatically record the current concentration data as needed.

3. The sound, light and vibration indication of the gas exceeds the standard.

4. Have a rechargeable lithium battery or replaceable battery, which can guarantee a power reserve for more than several hours of continuous use.

5. The weight and volume of the equipment. Many portable gas detectors are small in size.